A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for spark-ignition or compression-ignition internal combustion piston engines for use in aircraft except civil
NSN 6105-01-444-3849
NSN 5895-01-285-2482
NSN 5920-01-453-7523
NSN 6150-01-514-2767
NSN 5960-01-315-3021
NSN 5945-01-384-1738
NSN 6620-01-047-5831
NSN 5835-01-632-6627
NSN 4140-01-449-1715
NSN 5920-01-155-1128
NSN 5915-00-429-1986
NSN 6240-01-251-8435